package com.example.springcloud;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;

/**
 * @ClassName PaymentHystrixMain8001
 * @Author Admin
 * @Date 2020/9/5 9:36
 * @Version 1.0
 **/
@SpringBootApplication
@EnableEurekaClient   //这个标签是开启注册中心用的
@EnableCircuitBreaker //对hystrix熔断机制的支持
public class PaymentHystrixMain8001 {
    public static void main(String[] args) {
        SpringApplication.run(PaymentHystrixMain8001.class, args);
    }

    /**
     * 此配置式为了服务监控而配置，与服务容错本身无关，springcloud升级后的坑
     * ServletRegistrationBean因为springboot的默认路径不是 "/hystrix.stream",
     * 只要在自己的项目里面配置上下面的Servlet就可以
     *
     * @return
     */
    @Bean
    public ServletRegistrationBean getSetvlet() {
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }
}
